Directors never have enough time, so making it easy to schedule board meetings is both challenging, and a big benefit if you can pull it off. iBoardrooms has put a great deal thought into its scheduling system and it allows for a low friction way to get board meetings on the calendar.
The board secretary, or another designated person, can propose a number of meeting times and send those times out to the members of the board. Then, the board members (or their assistants) can easily select the times that work for them. This easy system substantially reduces the amount of back and forth that directors or their assistants have to deal with, freeing them up to focus on your strategy.